# SimfyAI Data vs EYN Tools

The clearest difference is in-app purchases: SimfyAI Data at none against EYN Tools's 3. SimfyAI Data also leads on iOS requirement (17.0 vs 26.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. EYN Tools sells 3 in-app purchases, starting at $3.99 per month. SimfyAI Data asks for nothing beyond the download.

SimfyAI Data ships an update monthly, EYN Tools every 2 weeks. Both last shipped on September 14, 2026.

## The numbers

| Metric | SimfyAI Data | EYN Tools |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 2.2 GB | 19 MB |
| Requires iOS | **17.0** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yanxu Xie](https://appshunter.io/developer/1449703818) | [Luke Gatz](https://appshunter.io/developer/1894551599) |

## What reviewers say

### SimfyAI Data

[App page](https://appshunter.io/ios/app/simfyai-data/id6670199269)

**Features:** macOS Compatibility

**In-app purchases:** none


### EYN Tools

[App page](https://appshunter.io/ios/app/eyn-tools/id6762532138)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Yearly Pro Plan | $29.99 | per year |
| Pro Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is SimfyAI Data free?

SimfyAI Data is free to download, with no in-app purchases.

### Is EYN Tools free?

EYN Tools is free to download, with in-app purchases available.

### Do SimfyAI Data or EYN Tools have ads?

Neither SimfyAI Data nor EYN Tools shows ads.

### Which is updated more often, SimfyAI Data or EYN Tools?

SimfyAI Data ships an update monthly, and EYN Tools every 2 weeks. Most recently, SimfyAI Data was updated on September 14, 2026 and EYN Tools on September 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*